content: /* ===========================================================
   * JFreeChart : a free chart library for the Java(tm) platform
   * ===========================================================
   *
   * (C) Copyright 2000-2011, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jfreechart/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
   * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
   * License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Oracle and Java are registered trademarks of Oracle and/or its affiliates. 
   * Other names may be trademarks of their respective owners.]
   *
   * -------------
   * Values2D.java
   * -------------
   * (C) Copyright 2002-2008, by Object Refinery Limited.
   *
   * Original Author:  David Gilbert (for Object Refinery Limited);
   * Contributor(s):   -;
   *
   * Changes:
   * --------
   * 28-Oct-2002 : Version 1 (DG);
   *
   */
  
  package org.jfree.data;
  
  /**
   * A general purpose interface that can be used to access a table of values.
   */
  public interface Values2D {
  
      /**
       * Returns the number of rows in the table.
       *
       * @return The row count.
       */
      public int getRowCount();
  
      /**
       * Returns the number of columns in the table.
       *
       * @return The column count.
       */
      public int getColumnCount();
  
      /**
       * Returns a value from the table.
       *
       * @param row  the row index (zero-based).
       * @param column  the column index (zero-based).
       *
       * @return The value (possibly <code>null</code>).
       *
       * @throws IndexOutOfBoundsException if the <code>row</code>
       *         or <code>column</code> is out of bounds.
       */
      public Number getValue(int row, int column);
  
  }
  